[WISPA] Grounding questions/help
I have several towers, all of which except for 1 never have any issues, however, this 1 tower (we are the only tenant) seems to have a problem each year during lightning season... Last night it took a hit, although it appears it came through the electrical and not the tower, but I’m not sure, the UPS was off, I reset it and it came back online --- but the POE injector did NOT, it was completely shot. Replaced the POE unit and the wireless gear came online, but started rebooting after about 15minutes (although it didn't this before, I just changed the POE from a 12v to 15v) tried a 24v POE, and the radio was still rebooting... Called the tower climber.. Anyways I looked over the ground and the tower appears to 3 ground rod off each tower leg and then the building has a separate ground rod - (unless its connected underground) Any thoughts? Thanks Dan -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Grounding questions/help
Run one #6 solid copper ground wire between all ground rods and tie them all together. Make sure the electrical supply ground rod is bonded to this. I would also suggest that you run a monitor test of the voltage at the location over time. Scriv Dan Metcalf wrote: I have several towers, all of which except for 1 never have any issues, however, this 1 tower (we are the only tenant) seems to have a problem each year during lightning season... Last night it took a hit, although it appears it came through the electrical and not the tower, but I’m not sure, the UPS was off, I reset it and it came back online --- but the POE injector did NOT, it was completely shot. Replaced the POE unit and the wireless gear came online, but started rebooting after about 15minutes (although it didn't this before, I just changed the POE from a 12v to 15v) tried a 24v POE, and the radio was still rebooting... Called the tower climber.. Anyways I looked over the ground and the tower appears to 3 ground rod off each tower leg and then the building has a separate ground rod - (unless its connected underground) Any thoughts? Thanks Dan -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Grounding questions/help
Yeah that’s what I'm thinking, basically my cat5 wire and POE system is the bond between the 2 separate grounds :-(... Is there an easy/cheap way to test of the grounds are connected underground? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of JohnnyO Sent: Tuesday, August 02, 2005 5:06 PM To: WISPA General List Subject: Re: [WISPA] Grounding questions/help Unless all of your grounds are bonded together - You stand the risk of causing your own nightmares due to the difference in potential across the 2 different grounding systems. Make sure everything is bonded together as 1 single grounding system. JohnnyO - Original Message - From: Dan Metcalf [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, August 02, 2005 3:24 PM Subject: [WISPA] Grounding questions/help I have several towers, all of which except for 1 never have any issues, however, this 1 tower (we are the only tenant) seems to have a problem each year during lightning season... Last night it took a hit, although it appears it came through the electrical and not the tower, but I’m not sure, the UPS was off, I reset it and it came back online --- but the POE injector did NOT, it was completely shot. Replaced the POE unit and the wireless gear came online, but started rebooting after about 15minutes (although it didn't this before, I just changed the POE from a 12v to 15v) tried a 24v POE, and the radio was still rebooting... Called the tower climber.. Anyways I looked over the ground and the tower appears to 3 ground rod off each tower leg and then the building has a separate ground rod - (unless its connected underground) Any thoughts? Thanks Dan -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Grounding questions/help
You might try running a continuity test with your voltage meter. Jeff -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dan Metcalf Sent: Tuesday, August 02, 2005 4:16 PM To: 'WISPA General List' Subject: RE: [WISPA] Grounding questions/help Yeah that's what I'm thinking, basically my cat5 wire and POE system is the bond between the 2 separate grounds :-(... Is there an easy/cheap way to test of the grounds are connected underground? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of JohnnyO Sent: Tuesday, August 02, 2005 5:06 PM To: WISPA General List Subject: Re: [WISPA] Grounding questions/help Unless all of your grounds are bonded together - You stand the risk of causing your own nightmares due to the difference in potential across the 2 different grounding systems. Make sure everything is bonded together as 1 single grounding system. JohnnyO - Original Message - From: Dan Metcalf [EMAIL PROTECTED] To: 'WISPA General List' wireless@wispa.org Sent: Tuesday, August 02, 2005 3:24 PM Subject: [WISPA] Grounding questions/help I have several towers, all of which except for 1 never have any issues, however, this 1 tower (we are the only tenant) seems to have a problem each year during lightning season... Last night it took a hit, although it appears it came through the electrical and not the tower, but I'm not sure, the UPS was off, I reset it and it came back online --- but the POE injector did NOT, it was completely shot. Replaced the POE unit and the wireless gear came online, but started rebooting after about 15minutes (although it didn't this before, I just changed the POE from a 12v to 15v) tried a 24v POE, and the radio was still rebooting... Called the tower climber.. Anyways I looked over the ground and the tower appears to 3 ground rod off each tower leg and then the building has a separate ground rod - (unless its connected underground) Any thoughts? Thanks Dan -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Grounding questions/help
Shovel. Draw a line between them and start digging down. Dan Metcalf wrote: Yeah that’s what I'm thinking, basically my cat5 wire and POE system is the bond between the 2 separate grounds :-(... Is there an easy/cheap way to test of the grounds are connected underground? -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of JohnnyO Sent: Tuesday, August 02, 2005 5:06 PM To: WISPA General List Subject: Re: [WISPA] Grounding questions/help Unless all of your grounds are bonded together - You stand the risk of causing your own nightmares due to the difference in potential across the 2 different grounding systems. Make sure everything is bonded together as 1 single grounding system. JohnnyO - Original Message - From: "Dan Metcalf" [EMAIL PROTECTED] To: "'WISPA General List'" wireless@wispa.org Sent: Tuesday, August 02, 2005 3:24 PM Subject: [WISPA] Grounding questions/help I have several towers, all of which except for 1 never have any issues, however, this 1 tower (we are the only tenant) seems to have a problem each year during lightning season... Last night it took a hit, although it appears it came through the electrical and not the tower, but I’m not sure, the UPS was off, I reset it and it came back online --- but the POE injector did NOT, it was completely shot. Replaced the POE unit and the wireless gear came online, but started rebooting after about 15minutes (although it didn't this before, I just changed the POE from a 12v to 15v) tried a 24v POE, and the radio was still rebooting... Called the tower climber.. Anyways I looked over the ground and the tower appears to 3 ground rod off each tower leg and then the building has a separate ground rod - (unless its connected underground) Any thoughts? Thanks Dan -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.9.7/60 - Release Date: 07/28/2005 -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: Fw: [WISPA] Grounding questions/help
- Original Message - From: Jeff Liebermann [EMAIL PROTECTED] To: Marlon K. Schafer (509) 982-2181 [EMAIL PROTECTED] Sent: Tuesday, August 02, 2005 5:06 PM Subject: Re: Fw: [WISPA] Grounding questions/help On Tue, Aug 02, 2005 at 04:09:05PM -0700, Marlon K. Schafer (509) 982-2181 wrote: can you help Dan out? What do you think I am? Some kind of answer factory? You're suppose to be the expert on this wireless stuff. roflol I learned from you remember! Replaced the POE unit and the wireless gear came online, but started rebooting after about 15minutes (although it didn't this before, I just changed the POE from a 12v to 15v) tried a 24v POE, and the radio was still rebooting... Called the tower climber.. Easy. Your radio on the tower is toast. It got clobbered by the same lightning bolt that ate your POE box. Lightning doesn't always totally destroy what it hits. Sometimes, only sensitive parts of the circuitry gets zapped. My guess is something died in the radio which is causing the reboots. It might also be something simple like the terminating end of the POE circuit, but my guess is that radio is the problem since it seems to sorta work until it reboots. Is it also possible that not having the tower grounded to the AC is making this worse? -- # Jeff Liebermann Liebermann Design 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 (voice) callto://JeffLiebermann (skype) # http://www.LearnByDestroying.comAE6KS # [EMAIL PROTECTED][EMAIL PROTECTED] -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
